“上焦如雾”，实际是指何项作用（）

A.心主血脉

B.肺主气

C.心肺的输布气血

D.胃的受纳

E.肺主治节的作用

Would you like some more coffee?（）

A.Yes. I would

B.No, I wouldn't

C.No, thank you

D.I've had enough